Loose-leaf binder



Si R. WYCHERL'EY.

LOUISEl LEAF BINDER. APPLICATION FILED MAR. I0, 1921.

Patented Nov. 22, 1921.

2 SHEETS-@HEBT x.

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LosE LEAF BINDER.

APPLICATION FILED MAR. 10| i921.

l ,3 98 ,2 1 4. Patented Nov. 22, 1921.

UNITED STATES certes.

SYDNEY R. WYCHERLEY, BROMLEY, ENGLAND, ASSIGNOR TO SPICER BRGT'HIRS, LIMITED, 0F LONDON, ENGLAND..

LOOSE-LEAF BINDER.

Specication of Letters Patent.

Patented Nov. 22, 1921.

Applicationled March 10, 1921.` Serial No. 451,243.

To all whom/ may concern:

Be it known that I, SYDNEY RENODEN VYCHERLEY, stationer, a subject of the King of England, residing at 25 Holligrave road, Bromley, Kent, England, have invented certain new and useful Improvements in Loose- Leaf Binders, (for which I have liled an application in England, No. 1,857 of 1920, filed J an. 20, 1920,) of which the following is a specification. l

This invention relates to loose leaf binders in which the leaves are strung upon flexible thongs or cords and are held together by two clamping bars which are drawn together by tightening or winding up the thongs or cords. The object of the invention is to provide improved means for connecting the covers to the back of the file and for connecting and holding in alinement the clamping bars.

The accompanying drawings show one embodiment of the invention. Figure 1 is a rear elevation of the binder in its closed condition and adjusted to take the. minimum number of sheets. Fig. 2 is a top view corresponding to Fig. 1; Fig. 3 is an inside elevation of the binder in its open conditionv and adjusted to take about the mean number of sheets; Fig. 4 is a top view corresponding to Fig. 3. Fig. 5 is a perspective view of the complete binder, omitting the sheets and the mechanism for drawing together the clamping bars which may be of any kind and does not form part of the invention. Fig. 5a shows a detail. Fig. 6 is a section through one of the pivots connecting the cover of the binder to the cover of the corresponding clamping bar. Fig. 7 is a detail view of the removable cover of the clamping bar. Fig. 8 is a fragmentary view of the clamping bar showing means .for attaching the cover. Figs. 9 and 10 are sections on line IX-X of Figs. 7 and 8.

t will be seen from Fig. 5 that covers 1 and 2 of the binder are not as usualcon nected by a flexible back made of leather or fabric, but are hinged direct at 3 and 4 respectively, to the clamping bars 5 and 6. The latter are directly connected to the two halves 7 and 8 of the telescopic back. The telescopic back is so constructed that it entirely covers the inner edges of the sheets. There is therefore no necessity to bind the two covers in the same manner as the covers of a book are bound. The two covers are solely connected through the telescopic back.

and 14: have double pin and slot engagement with 'the flanges 12 and 11 as may be seen from Fig. 4. Flange 13 is provided with two Slots 17, into which take two pins 18 of the flange 12. lThe two halves 7 and 8 of the back are thus very firmly guided in one another and are consequently capable of holding the clamping bars in alinement even in case an excessivepressure should be put on the clamping` bars. lt will also be seen that although the baclris so constructed as to cover entirely the inner edges of the sheets and to hold efciently the clamping bars in alinement, it hardly increases the total length of the ledger as the inneredges of the sheets may be brought close to the parts 9 and 11.

rlDhe construction of the mechanism for winding up the thongs does not formpart of the invention and may be of any suitable lrind. It is assumed that the ends of the thongs 20, 20 are permanently secured in the clamping bar 6, and that the otherends are secured to and wound upon a shaft 19 mounted within the U shaped clamping bar 5. The U shaped clamping bar 5 may be permanently secured to the ange 10 in any suitable manner.

The cover 2 is hinged direct to the clamping bar 6 at Ll, 4. For this purpose metal flaps 21, 21 are fixed to the edges of the f cover 2 and are provided with eye portions i to a removable cover 24 of the clamping bar (see Figs. 7 and 9). The connection between the cover l and the cover 24 is effected through metal Vstrips 25 fixed t0 the edges of the cover and provided with eye portions 26. Y the parts 24 and 26 and form the pivots are in this case hollow toallow of the insertion of a key or other tool for operating the mechanism mounted inside the clamping bar (see Fig. 6). The cover 24 is detachably secured to the clamping bar in the following manner. Within the clamping bar are arranged pins 28 which are adapted to snap into holes 29 of the cover Q4. Preferably three pins are arranged on each side,

two opposite. pins being mounted on a common spring carrier 30. These springs may be constructed sufficiently strong to serve also for reinforcing the clamping bar. If it is desired to inspect the mechanism within the clamping bar the pins are pressed inwardly by hand, and the cover l with the cover 2d is then slid off.

An important advantage of the invention resides in the fact that it is not necessary to bind the covers in the usual manner. All the parts of the bindermay be made separately and may be connected very rapidly and solidly, and a comparatively large numberof sizes may be made from a comparatively small number of stock sizes of the various component parts.

I claim- Y l. A loose leaf binder comprising clamping bars, one of said bars comprising detachablyv associated housing sections, leafengaging lmeans connecting one of the housing sections with the otherA clamping bar,

and -a cover hinged to theother housing section.

The pins Q7 which connect 2. A loose leaf binder comprising. clamp.- ing bars, one of said bars comprising interfitting channel sections, means for detachably connecting the sections, flexible thongs between the other clamping bar and one of the channel sections, and a cover pivotally connected to the ends of the other of said channel sections.

3. A loose leaf binder comprising leaf clamping bars, thongs connected to oner bar, the other bar comprising a housing composedv of `detachafbly associated overlapped channel sectfons, means carried by the inner section; and projecting outwardly therefronr and detachably engaging'v the outer o-f thek overlapped sections for securing thesamev together, a shaft Vwithinthe housing,

and? means for connecting the thongs Vto the f shaft so as to wrap them thereupon when said! shafty is rotated f el; A loose; leaf binder comprising leaf' they other? bari comprising` a housing com-l posed of detachably associated: overlapping 1 channel sections, bowed springsv within. the housing having outsandin'g studs that pass'j through the overlapped :sections for securing the same together,.. a shaft within the housing', and means for connecting the thongs tothe shaft so Vas to wrap them thereupon when said shaft isnrotated.A

In testimony whereof l have hereunto set my hand in thef'presen'ce of two witnesses;U

Y C. CoNsTANcE CHALK, F. BELL. i 

